775026540 has 36 divisors (see below), whose sum is σ = 2350914384. Its totient is φ = 206673696.

The previous prime is 775026509. The next prime is 775026541. The reversal of 775026540 is 45620577.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×775026540² = 1201332275408743200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 775026495 and 775026504.

It is not an unprimeable number, because it can be changed into a prime (775026541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2152672 + ... + 2153031.

Almost surely, 2^775026540 is an apocalyptic number.

It is an amenable number.

775026540 is an abundant number, since it is smaller than the sum of its proper divisors (1575887844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

775026540 is a wasteful number, since it uses less digits than its factorization.

775026540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4305718 (or 4305713 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 775026540 is about 27839.2984825408. The cubic root of 775026540 is about 918.5557601311. Note that the first 3 decimals are identical.

The spelling of 775026540 in words is "seven hundred seventy-five million, twenty-six thousand, five hundred forty".